{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["machine or equipment", "application", "manufacturing standard", "material", "process characterization", "enabling technology"], "input": "BackgroundAdditive manufacturing ( AM ) is a rapidly expanding new technology involving challenges to occupational health ."}
{"machine or equipment": [], "application": [], "manufacturing standard": [], "material": [], "process characterization": [], "enabling technology": []}